Help / Advice needed with part number

I've got a faulty 'Central locking Pump' on my A3 1.6se (year 2000), the part number on the base is 8LO 862 257 P.

I've sourced one that looks identical and has a similar part number 8DO 862 257 E.

Can anybody tell me if this part will do?

Also do I need to have access to Vagcom when I replace it? The reason I ask is because the alarm sounds when it's disconnected and I'm wondering will it need resetting etc when I replace it with a new part?

Parts Request

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